726415243 has 2 divisors, whose sum is σ = 726415244. Its totient is φ = 726415242.

The previous prime is 726415199. The next prime is 726415309. The reversal of 726415243 is 342514627.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726415243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 726415199 and 726415208.

It is not a weakly prime, because it can be changed into another prime (726413243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363207621 + 363207622.

It is an arithmetic number, because the mean of its divisors is an integer number (363207622).

Almost surely, 2^726415243 is an apocalyptic number.

726415243 is a deficient number, since it is larger than the sum of its proper divisors (1).

726415243 is an equidigital number, since it uses as much as digits as its factorization.

726415243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 34.

The square root of 726415243 is about 26952.0916256976. The cubic root of 726415243 is about 898.9350543675.

The spelling of 726415243 in words is "seven hundred twenty-six million, four hundred fifteen thousand, two hundred forty-three".